<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>

<body>
    <select id="single">
        <option>Single</option>
        <option value="Single3" selected >Single2</option>
        <option>Single3</option>
    </select>
    <select id="multiple" multiple="multiple">
        <option selected="selected">Multiple</option>
        <option>Multiple2</option>
        <option selected="selected">Multiple3</option>
    </select><br />
    <input type="checkbox" value="check1" /> check1
    <input type="checkbox" value="check2" /> check2
    <input type="radio" value="radio1" /> radio1
    <input type="radio" value="radio2" /> radio2
    <input type="text" value="text" /> text
    <input type="password" value="" /> text

    
    <script src="../js/jquery.3.5.1.js"></script>
    <script>
        // $("#single").val("Single3");
        // $("#single").val(["Single2", "Single3"]);
        // $("#multiple").val(["Multiple2", "Multiple3"]);
        // $("#multiple").val("Multiple2", "Multiple3");
        // $("input").val(["check2", "radio1"]);
        // $("input").val(radio2);
        // $("input:eq(4)").val("djfoewwj``111");

        console.log( $("#single").val())

    </script>
</body>

</html>